5
Installation
instructions
This appliance must be in-
stalled by an authorised
person.
This appliance shall be instal-
led in accordance with the
manufacturer’s installation in-
structions, local gas fitting re-
gulations, municipal building
codes, AG 601 and any other
relevant statutory regulations.
Data Labe
l
the data label is located on
the top of the water heater.
This appliance is suitable for
propane gas only, ensure that
the available gas supply is sui-
table.
Intended use
This appliance has been de-
signed for the installation in
caravans, mobile homes and
other vehicles. It is not ap-
proved for installation in
boats. Other forms of use are
also possible following con-
sultation with Truma.
Information regarding boats:
For installation in boats Truma
supplies the DVGW-tested
boat water heater.
Regulations
Any alteration to the appli-
ance (including cowl) or the
use of spare parts and acces-
sories which are important for
the functioning of the heater
and which are not original
Truma parts, as well as the
non-observance of the instal-
lation and operating instruc-
tions, shall lead to the cancel-
ling of the guarantee and
exclusion of liability claims. It
also becomes illegal to use
the appliance, and in some
countries this even makes it
illegal to use the vehicle.
The operating pressure for
the gas supply is 2.75 kPa
(propane) and must corres-
pond to the operating pres-
sure of the appliance (see
data plate).
When installing the appliance
always observe the technical
and administrative rules and
regulations of the country in
which the vehicle is to be
registered, for the first time!
In Germany, for example, gas
appliances, cylinder mount-
ing, duct routing as well as
the approval and leak test
must comply with the DVGW
form G 607 for liquid gas sys-
tems in vehicles.
Ask for more details con-
cerning regulations in the
re-spective countries from
our agencies abroad (see
page 9).
1
Choice of location
1. Always install the appliance
in such a way that it is easily
accessible for service work at
all times and can be easily re-
moved and installed.
2. Locate the heater in such a
way that the cowl can be
mounted on the outside on a
surface which is as straight
and smooth as possible.
This outside surface must be
exposed to wind from all
directions and, if possible,
there should be no trim strips
or covers in this area, mount
heater on an appropriate
base, if necessary.
The Cowl must be placed in
such a way that the exhaust
gas cannot find its way into
the vehicle interior. For this
reason, choose a location
where there are no opening
windows, skylights or ventila-
tion openings directly above
the cowl or for 30 cm on
either side. If this is not pos-
sible, a warning plate must be
placed on the inside of the
window (or skylight) stating
that it must be kept closed
while the heater is operating.
In this case refrigerator venti-
lations must be tight-sealed
from the interior of the ve-
hicle.
2
Installation of the
water heater
1. Position template for cowl
opening on the inside of the
wall.
A = bottom edge of heater
B = lateral edge of heater
Drill 4 holes (C) with 10 mm
dia. through the wall. Drill
hole (E) with 15 mm dia. for
condensation pipe (also pos-
sible from the outside = F).
2. Position template on the
outside of the wall.
The markings (C) must be
above the through-holes. Saw
cut-out section for cowl (D)
92 x 168 mm.
If the distance between out-
side wall and heater is more
than 35 mm you must use
the cowl extension VBO 2
(Art. no. 70131-00) with an ad-
ditional length of 50 mm. Saw
out 100 x 176 mm along the
dashed line.
If there are any cavities in the
area of the cowl (
Fig. A: 1
),
pack these with pieces of
wood so as to be able to tigh-
ten the screws.
Cut out trim strips or such on
the vehicle or place supports
beneath them so as to make
the cowl lie flat.
Place a support beneath the
heater if the walls are sloping.
An angle of inclination of 10
degrees is not to be excee-
ded.
3. Fig. A:
Insert heater with
cowl body (3) through the
cowl opening (1), allow ap-
prox. 5 mm to project out of
the wall. Mount sealing frame
(4) (the anti-torsion device en-
sures correct fitting!). Pre-drill
holes for the 6 fastening bolts
(5).
4. Remove sealing frame (4)
and coat with plastic sealant
(6) on the side facing the ve-
hicle - do not use silicone!
Attention:
The sealing frame
must be well sealed with re-
spect to the front sides and
the cross bars of the cowl
body (3) as well as towards
the outside wall!
5. Fasten sealing frame (4) to
the cowl body using 4 self-
cutting screws (7). Press the
plastic caps onto the screw
heads.
6. Seal the gap between the
hole (2) and the condensation
tube (10) with plastic sealant
(6) - do not use silicone!
7. Mount the grille (8). Press
the entire cowl assembly
onto the vehicle wall and fas-
ten with 6 screws (5).
8. Securely fasten heater to
the vehicle floor at at least 2
connecting straps (11).
3
Water connection
The water heater and the
safety/drain valve are equip-
ped with connections for fle-
xible hoses (food-safe, pres-
sure resistant up to 400 kPa)
of 10 mm internal diameter in
order to connect the water
heater safely without bends
or kinks.
All pressure and submergible
pumps up to 280 kPa are
used for operating the water
heater and all mixing combi-
nation sets with or without an
electrical switch.
Figure C:
When using sub-
mergible pumps, a non-return
valve (12) (Art. no. 70000-
03300) must be installed up-
stream of the first branch in
order to prevent backflow.
This is not required when
using pressure pumps with
built-in non-return valves.
Note:
For semi rigid pipe rou-
ting (e.g. John Guest System)
Truma can provide the water
connectors (15 + 16), the
safety/ drain valve (13) and a
non-return valve (12) with a
straight 10 mm diameter tap
connector as special acces-
sories.
If connecting to a central
water supply (rural or city
connection) or when using
more powerful pumps, a
pressure reducer must be
used which prevents pres-
sures of greater than 280 kPa
occurring in the boiler.
Warning:
Route the water
hoses so that they are as
short and free of kinks as
possible. All hose connec-
tions must be secured using
hose clamps (also for cold
water)! Pressures of up to
400 kPa can occur in the
safety/drain valve (also in sub-
mergible pumps) because of
the heat of the water and the
resulting expansion.
Hose clips (Art. no. 40710-00)
are recommended for atta-
ching the hoses to the wall or
the floor. If gas heating has
been installed, the water
hoses and the hose clips can
be laid on the hot air pipes,
which prevents frost.
Warning: In order to gua-
rantee that the Boiler is
completely empty, the en-
closed elbow with breather
valve (figure C: 15) must be
used for the hot water
connection!
All hot water pipes should
be routed in a descending
manner to the safety/drain
valve! Otherwise no gua-
rantee of protection from
frost!
Installation of
safety/drain valve
Fig. C:
Install safety/drain
valve (13) at a place which is
easily accessible, near the
water heater. Drill hole with
18 mm diameter and pass
through discharge socket with
hose (14). Fasten safety/ drain
valve with 2 screws. The drai-
ning is to be directly to the
outside at a position protec-
ted against splash water
(apply splash guard, if neces-
sary).
